Using interdigital capacitance to reduce crosstalk between microstrip lines

MA Chang; WANG Ya-fei

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Using interdigital capacitance to reduce crosstalk between microstrip lines

更新时间：2026-09-04

- Using interdigital capacitance to reduce crosstalk between microstrip lines
- Vol. 36, Issue 7, Pages: 32-35(2019)
- 作者机构：
  
  北京信息科技大学机构信息与通信工程学院,北京,100192
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2019
- 稿件说明：
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马畅, 王亚飞. 利用叉指电容减小微带线间串扰[J]. 微电子学与计算机, 2019, 36(7): 32-35.

MA Chang, WANG Ya-fei. Using interdigital capacitance to reduce crosstalk between microstrip lines[J]. 2019, 36(7): 32-35.
马畅, 王亚飞. 利用叉指电容减小微带线间串扰[J]. 微电子学与计算机, 2019, 36(7): 32-35. DOI：

MA Chang, WANG Ya-fei. Using interdigital capacitance to reduce crosstalk between microstrip lines[J]. 2019, 36(7): 32-35. DOI：

摘要

针对目前减小PCB板上微带线间串扰的方法效果有限的问题

提出一种利用叉指电容来减小微带线间串扰的方法.该方法在微带线两端对称加入叉指电容进行电容补偿来平衡不相等的容性耦合和感性耦合进而实现串扰减小.并先后用电磁仿真软件(HFSS)和矢量网络分析仪对远端串扰和插入损耗进行仿真和实际测量

结果表明:仿真和实测吻合良好

加入叉指电容可以使远端串扰减小9 dB以上

且制作成本较低

易于实现.

Abstract

In view of the limited effect of current methods to reduce the crosstalk of microstrip lines on PCB board

a method to reduce the crosstalk of microstrip lines using interdigital capacitance is proposed. In this method

an interdigital capacitor is added symmetrically to the two ends of the microstrip line to compensate the capacitance to balance the unequal coupling capacitance and inductance

thereby reducing the crosstalk. The simulation and actual measurement of remote crosstalk and insertion loss are carried out by using electromagnetic simulation software (HFSS) and vector network analyzer. The results show that the simulation and measurement are in good agreement. The addition of interdigital capacitor can reduce the remote crosstalk by more than 9 dB

and the production cost is low and easy to realize.

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references

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